These are used belt loading machines in the steel storage cans.
These machines are designed to fill the steel belts with loaded 7.62X54R ammunition.
The machine can be mounted on a bench or fitted onto the top of the storage container.
Loaded rounds are placed in the hopper, the empty steel belt is fed into the side, turn the handle and a loaded belt comes out!
Fast and easy to use, a must have accessory for anyone shooting a Soviet era belt fed firearm!